The end of the hollow shaft is provided with a head (6) to which the tablet (1) is articulated by means of a cam-shaped element (7).
中空轴的端部配备有一头（6），通过一凸轮状元件（7） 将书写板（1）铰接到该头（6）。
The end of the hollow shaft is provided with a head (6) to which the tablet (1) is articulated by means of a cam-shaped element (7).
中空轴的端部配备有一头（6），通过一凸轮状元件（7） 将书写板（1）铰接到该头（6）。
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